I recently wanted to fit a small Whale electric water pump into my water container to supply the galley spout of my boat here in Taupo, New Zealand. A simple push button switch in the 12V supply to the water pump and it’s all working fine! Fitting a water pump, step by stepStep 1: Water pipe fits snugly through the screw-down container lid. Step 2: Pump power cable goes up inside the water pipe. Step 3: The water pump just fits down through the opening of the 25lt water container.